Z0843004

The Z0843004 is a four-channel counter/timer can be programmed by system software for a broad range of counting and timing applications. The features of Z0843004 can be summarized as (1)four independently programmable counter/timer channels, each with a reable downcounter and a selectable 16 or 256 prescaler.; (2)selectable positive or negative trigger initiates timer operation; (3)three channels have zero count/timeout outputs capable of driving darling darlington transistors.

The absolute maximum ratings of the Z0843004 are: (1)voltage on VCC with respect to VSS: -0.3V to +7.0V; (2)voltage on all inputs with respect to VSS: -0.3V to VCC+0.3V; (3)storage temperature: -65 to +150.

The following is about the electrical characteristics of Z0843004: (1)clock input low voltage: -0.3V min and +0.45V max; (2)clock input high voltage: VCC-0.6V min and VCC+0.3V max; (3)input high voltage: 2.2V min and VCC max; (4)input low voltage: -0.3V min and 0.8V max; (5)output low voltage: 0.4V max at ILO=2.0mA; (6)output high voltage: 2.4V min at IOH=-1.6mA; (7)output high voltage: VCC-0.8V min at IOH=-250A; (8)input leakage voltage: -10A min and 10A max at VIN=0.4V to VCC; (9)3-state output leakage current in float: -10A min and 10A max at VOUT=0.4V to VCC.